- Unknown:
- Arthur Koestler
- Unknown:
- Rupert Davies
- Unknown:
- Susan Hampshire
- Composed By:
- William Davies
- Produced By:
- H. B. Fortuin
- Produced By:
- Susan Hampshire
- Mr Glowworm:
- Rupert Davies
- Sam the barman:
- Alfie Bass
- Colonel of Police:
- Eric Anderson
- Senora Gonzalez:
- Mary Wimbush
- Henry:
- Nigel Anthony
- Lucy:
- Isabel Rennie
- Inspector Walker:
- Bruce Beeby
- Alpha:
- Gabriel Woolf
- Omega:
- Margaret Wolfit
- Mary:
- Susan Hampshire
- The Ushers:
- Peter Marinker
- The Ushers:
- Peter Bartlett
- Prime Minister:
- Patrick Barr
- Minister for Foreign Affairs:
- John Boxer
- Minister of Enlightenment:
- William Fox
- Minister for Air:
- Alan Haines
- Minister of Justice:
- John Ruddock
- Minister for Sabbath Gloom:
- Timothy Harley
- Minister for War:
- Stephen Thorne
- Minister for Sweat and Toil:
- George Curzon
- Mr Smith of the T U:
- Frederick Treves
